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J. W. KANSKY.

VENTILATOR. APPLICATION FILED OCT. 26. 19M.

Patented May 13, 1919.-

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Specification of Letters Patent.

Patented May 13, 1919.

Application filed October 26, 1918. Serial No. 259,837.

' To all whom it may concern:

Be it known that I, JOSEPH W. KANsKr, a subject of the King of Great Britain, residing at Meota, in the Province of Sas- Dominion of Canada, have invented new and useful Improvements in Ventilators, of which the following is a specification.

This invention relates to ventilators, and has for its object the provision of a ventilator particularly adapted for connection with a window whereby a room may be effectually ventilated and the air kept fresh and wholesome even though the window remains closed.

An important object is the provision of a ventilator particularly adapted for association with the sash rail of the lower sash and provided for the admission of fresh air.

A further object is the provision of a device of this character which may be quickly and easily adjusted so as to vary the amount of fresh air entering the room.

An additional object is the provision of a device of this character which will be simple and inexpensive in manufacture and installation, readily controllable, efficient in use, durable in service and a general improvement in the art.

With the above and other objects and advantages in view, the invention consists in the details of construction to be hereinafter more fully described and claimed, and illustrated in the accompanying drawings in which Figure 1 is an elevation of a window showing my device applied thereto and in closed position.

Fig. 2 is an enlarged front elevation of the member.

Fig. 3 is a rear elevation thereof and Fig. 4: is a central longitudinal sectional view therethrough.

Referring more particularly to the drawing the letters A and B designate the upper and lower sashes of a window with which my device is associated.

In carrying out my invention it is preferable to employ a ventilator member designated by the numeral 10, associated with the upper sash A for permitting egress of foul air. The detailed structure of this ventilator member forms no part of the present invention though it is shown to explain the application of the invention itself.

In order to provide for, admission of fresh air into the room, I provide a member designated broadly by the numeral 25 associated with the lower sash, this member comprises a drum 26 formed of two cylindrical sections 27 and 28 telescopically engaging each other so that they may be adjusted. Both sections 27 and 28 are closed at their outer ends and are provided at their outer ends with flanges 29. The closed end 30 of the section 27 is provided with a plurality of perforations 31 and the closed end Wall 32 of the section 28 is provided with a pair of segmental openings 33. v

Disposed within the drum 26 and movable against the end wall 32 is a damper plate 34 provided with a pair of segmental openings 35 adapted to be brought into registration with the openings 33. A bar 36 is secured to the damper plate 34 and is slidably engaged by a loop 37 formed on one end of a rod 38 which is slidable through the end wall 30 and which is provided at its projecting end with a handle 39. The slidable connection of the loop 37 with the bar 36 permits an operative connection to be main tained between the rod 38 and the damper plate 34 when the sections 27 and 28 of the drum are adjusted toward or away from each other.

This member 25 is associated with the lower sash by disposing it through a cylindrical hole 40 formed in the bottom rail of the lower sash. The sections 27 and 28 of the drum 26 are inserted from opposite sides of the rail and are telescopically engaged with each other. When these sections are properly adjusted the flanges 29 will bear against the inner and outer faces of the rail and will maintain the drum in proper position.

In the use of this device, it will be seen that when the operator grasps the handle 39 and rotates the damper plate 3 L so that the openings 35 therein will register to a great or less extent with the openings 33 in the closed end 32 fresh air will be admitted through the drum 26 and through the perforations 31 into the room.

From the foregoing description and a study of the drawings it will be apparent that I have thus provided a very simple device adapted for association with a window whereby the air within a room may be kept fresh and wholesome even though thewindow'be closed. Furthermore, it will be noted that by moving the handle 39 to different positions the-position of the damper plate 3tmay be varied so as to admit a greater or less amount of fresh air. It will also be noted that the cover plate 21 may be swung into closed position and that the damper plate 34 may be so moved that the opening '85 therein Will be entirely out of registration With the openings 33 in the end Wall 32 so that the entire device will be in its operative position.

While I have shown and described the preferred embodiment of the invention, it Will of course be readilyunderstood that I reserve the right to make such changes in the fo-rm,rconstruction and arrangement of parts as will not depart from the spirit of the invention nor the scope of the subjoined claim. For example, the fresh air inlet member may be arranged Within a hole through the Wall of a building instead of through the bottom rail of the loWer sash of a Window.

Having thus described my invention I claim A ventilator comprising a pair of tele- Copies of this patent may be obtained for five cents each, by addressing the Washington, D. G.

damper plate disposedupon the inner face of saidsecond named closed end and provided With openings, adapted to register with said first named openings, said damper plate being rotatable in respect to the associated end Wall, a bardisposed longitudinally Within said sections secured at one end upon the center of said damper plate and formed angular incross section, a rod slidable through said first named endyvall and provided exteriorly thereof vWith a handle, and a loop formed on the inner end of said rod and slidably engaging said bar,

whereby operative engagement between said rod and bar for rotation of the plate will be maintained. I

In testimony whereof I affix my signature.

J OSE-PH WM. ,KANSKY.

Commissioner of Patents, 

